Question: What was film crew member Hal Ambro's roll for Mary Poppins?
Paraphrase: What role did Hal Ambro play in the film crew of Mary Poppins?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q209170 p:P3092 ?s . ?s ps:P3092 wd:Q3125876 . ?s pq:P3831 ?value}